฿28,102+ Cheap flights to Portsmouth

— LHR
21 Oct — 28 Oct1
1 adult
1 adult, Economy, 0 bags

Flights to Portsmouth in 2026

Enter your travel dates to find the best prices.

One-way flights to Portsmouth

Wed 13/108:15 -
2 stops42h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 17/9฿28,102

Find flight deals to Portsmouth

Return from

฿24,173

One-way from

฿28,102

Popular in

July

Cheapest in

February

Average price

฿33,829
IndiGo
  • IndiGo
  • 3/10-9/10
  • 2 total stops
  • 57h 30m total
  • Bangkok to London
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Qatar Airways
  • Qatar Airways
  • 13/1-31/12
  • 2 total stops
  • 42h 15m total
  • Bangkok to Portsmouth
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Highest demand for flights based on searches. 6% potential increase in price (฿2,210 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (฿435 potential savings vs. average return price).
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Average for return flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights to Portsmouth that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

BangkokSouthampton

BKK Bangkok Suvarnabhumi - SOU Southampton Eastleigh

BKKSOU

Bangkok Suvarnabhumi

Wed 13/1

08:15-19:30

2 stops42h 15m

Southampton Eastleigh

Wed 31/12

00:00-06:00

Nonstop0h 00m

฿28,102

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Sorted by cheapest first

Best time to book a flight to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight to Portsmouth

How long is the flight to Portsmouth?

On average, a flight from Bangkok to Portsmouth takes 27 hours 25 minutes. Flights to Portsmouth from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to Portsmouth

The most flights from Bangkok to Portsmouth are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Portsmouth by month

In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 mm per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.

Temperature in Portsmouth by month

If weather is an important factor for your trip to Portsmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

FAQs about flying to Portsmouth

  • Can I find cheaper flights to Portsmouth if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Portsmouth on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Portsmouth?

    Based on reviews from Cheapflights users, เอทิฮัดแอร์เวย์ is rated the highest out of the airlines that fly to Portsmouth.

  • How much is a return flight to Portsmouth?

    A return flight to Portsmouth will typically cost around ฿18,310, however they can be found for as little as ฿18,154.

  • Where does the fastest flight to Portsmouth depart from?

    For those looking to save time traveling to Portsmouth, Bangkok offers the quickest one-way flight (27 hours 25 minutes).

  • Does London Heathrow have rental cars?

    Yes. Those touching down at London Heathrow can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to London Heathrow?

    Yes. London Heathrow has hotels nearby for those requiring accommodations. Aerotel London Heathrow is the closest property to London Heathrow (0.0 km away from London Heathrow).

See more FAQs

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